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Economic scheduling method for power system with optical storage and charging park power grid

An economic dispatching and power system technology, applied in the field of power system economic dispatching of power grids containing photovoltaic storage and charging parks, can solve problems such as the lack of charging and discharging strategies for electric vehicles and energy storage devices

Inactive Publication Date: 2019-09-24
STATE GRID ZHEJIANG ELECTRIC POWER CO LTD JIAXING POWER SUPPLY CO
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Problems solved by technology

[0004] The technical problem to be solved by the present invention is: the current technical problem of lack of reasonable planning of charging and discharging strategies for electric vehicles and energy storage devices

Method used

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  • Economic scheduling method for power system with optical storage and charging park power grid
  • Economic scheduling method for power system with optical storage and charging park power grid
  • Economic scheduling method for power system with optical storage and charging park power grid

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Embodiment 1

[0060] A power system economic scheduling method for power grids containing photovoltaic storage and charging parks, such as figure 1 As shown, this embodiment includes the following steps:

[0061] Step 1: Establish the mathematical models of the solar-storage-charge integrated controller 200, energy storage and electric vehicles in the park 100.

[0062] (1) The power flow model of the integrated optical storage and charging controller 200:

[0063] P ER =P B +P PV -P EV

[0064] P CR =P BAT +P PV -P EV

[0065] Among them, P CR is the active power exchanged between the solar-storage-charge integrated controller 200 and the grid, P BAT is the power flowing from the energy storage battery to the integrated solar-storage-charge controller 200, P PV is the power flowing from the photovoltaic power generation device to the integrated solar-storage-charge controller 200, P EV It is the charging power that flows to the electric vehicle from the integrated light-stora...

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Abstract

The invention relates to the technical field of power system scheduling, and specifically relates to an economic scheduling method for a power system with an optical storage and charging park power grid. The economic scheduling method comprises the steps of first, establishing an optical storage and charging integrated controller model, an energy storage device model and an electric automobile state model for optical storage and charging of a park; second, accessing the park as a load node to a regional power grid; third, establishing an objective function with social benefits being optical on the whole; fourth, establishing constraint conditions; fifth, carrying out day-ahead economic optimization by taking the [delta]T as a time interval to obtain a dispatching result. The method has the substantial effects that the day-ahead economic optimization scheduling according to the load and photovoltaic prediction data, the comprehensive social benefit maximization of park users and the power grid is realized through reasonably planning the charging and discharging behaviors of the energy storage device and the electric automobile, the economic potential of various energy factors is explored, and the method has the great advantages and popularization and application prospects compared with the traditional method that only new energy is accessed without control.

Description

technical field [0001] The invention relates to the technical field of electric power system dispatching, in particular to an economical dispatching method of electric power system for power grids containing photovoltaic storage and charging parks. Background technique [0002] With the continuous development of new energy technologies, new energy sources such as distributed photovoltaics are connected to the grid on a large scale. However, its output is volatile and random, which brings challenges to the smooth operation of the power grid. At the same time, electric vehicles and energy storage technologies continue to mature, providing new controllable factors for the control of the grid. As more and more large-scale industrial parks install photovoltaic and energy storage equipment, and promote the use of low-carbon green electric vehicles in the park. How to rationally plan the charging and discharging strategies of these electric vehicles and energy storage devices whe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/00H02J3/38H02J3/32H02J3/46
CPCH02J3/383H02J3/32H02J3/46H02J3/008H02J2203/20Y02E70/30Y02E10/56
Inventor 孙可陈锡祥陈嵘郑伟民殷伟斌郁家麟陈理李春郑朝明刘伟
Owner STATE GRID ZHEJIANG ELECTRIC POWER CO LTD JIAXING POWER SUPPLY CO
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